Load Specifications
Load data in caliber 7 mm Rem. Mag. with .285 | 173gr | Prvi Partizan SP bullet and 71 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Reloder-26, Winchester StaBALL HD and Hodgdon Retumbo.
Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.
Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.
Charge: Powder weight in grains. Start with the minimum load and work up carefully.
FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.
MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.
V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.
z (Powder Burn): Estimated propellant combustion percentage at bullet exit.
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Max Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 94% | 56,202 psi | 90% | 2753 fps | 100% |
| Accurate 4350 | <<locked>> | 84% | 54,041 psi | 87% | 2730 fps | 100% |
| Accurate MAGPRO | <<locked>> | 92% | 54,737 psi | 88% | 2844 fps | 98.2% |
| ADI AR 2209 | <<locked>> | 90% | 54,810 psi | 88% | 2789 fps | 99.6% |
| ADI AR 2213 | <<locked>> | 94% | 55,985 psi | 90% | 2844 fps | 99.2% |
| ADI AR 2217ᴾ | <<locked>> | 100% | 50,299 psi | 81% | 2753 fps | 98.6% |
| ADI AR 2225ᴾ | <<locked>> | 100% | 44,846 psi | 72% | 2713 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 86% | 54,926 psi | 88% | 2782 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 82% | 56,043 psi | 90% | 2795 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 90% | 54,273 psi | 87% | 2776 fps | 99.6% |
| Alliant Reloder-22 | <<locked>> | 94% | 56,072 psi | 90% | 2841 fps | 99.8% |
| Alliant Reloder-23 | <<locked>> | 94% | 53,751 psi | 86% | 2762 fps | 100% |
| Alliant Reloder-25 | <<locked>> | 98% | 53,011 psi | 85% | 2822 fps | 100% |
| Alliant Reloder-26 | <<locked>> | 90% | 53,896 psi | 86% | 2844 fps | 100% |
| Baschieri & Pellagri 109 | <<locked>> | 94% | 54,056 psi | 87% | 2753 fps | 96.4% |
| Bofors RP15 | <<locked>> | 96% | 55,216 psi | 89% | 2828 fps | 99.6% |
| Bofors RP30ᴾ | <<locked>> | 100% | 52,794 psi | 85% | 2822 fps | 99.2% |
| Bofors RP5 | <<locked>> | 94% | 56,072 psi | 90% | 2841 fps | 99.8% |
| Bofors RP7 | <<locked>> | 84% | 56,202 psi | 90% | 2726 fps | 99.9% |
| Hodgdon H1000ᴾ | <<locked>> | 100% | 55,405 psi | 89% | 2835 fps | 99.6% |
| Hodgdon H414 | <<locked>> | 84% | 55,622 psi | 89% | 2782 fps | 100% |
| Hodgdon H4350 | <<locked>> | 82% | 54,549 psi | 87% | 2740 fps | 99.7% |
| Hodgdon H4831 | <<locked>> | 92% | 56,101 psi | 90% | 2789 fps | 98.7% |
| Hodgdon H4831 SC | <<locked>> | 92% | 55,027 psi | 88% | 2772 fps | 98.5% |
| Hodgdon Hybrid 100V | <<locked>> | 88% | 55,071 psi | 88% | 2707 fps | 100% |
| Hodgdon Retumboᴾ | <<locked>> | 100% | 55,535 psi | 89% | 2946 fps | 100% |
| Hodgdon Superformance | <<locked>> | 84% | 55,811 psi | 89% | 2818 fps | 100% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 37,130 psi | 60% | 1716 fps | 100% |
| IMR 4350 | <<locked>> | 86% | 54,302 psi | 87% | 2717 fps | 99.9% |
| IMR 4451 Enduron | <<locked>> | 82% | 54,128 psi | 87% | 2697 fps | 99.9% |
| IMR 4831 | <<locked>> | 86% | 54,447 psi | 87% | 2723 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 90% | 53,635 psi | 86% | 2717 fps | 98.4% |
| IMR 7828 SSC | <<locked>> | 94% | 53,969 psi | 87% | 2825 fps | 99% |
| IMR 8133 Enduronᴾ | <<locked>> | 100% | 40,567 psi | 65% | 2621 fps | 96.4% |
| Lovex S065 | <<locked>> | 84% | 54,839 psi | 88% | 2697 fps | 100% |
| Lovex S070 | <<locked>> | 84% | 53,026 psi | 85% | 2694 fps | 100% |
| Lovex S071 | <<locked>> | 98% | 53,853 psi | 86% | 2720 fps | 100% |
| Norma 204 | <<locked>> | 86% | 55,303 psi | 89% | 2772 fps | 99.5% |
| Norma 217ᴾ | <<locked>> | 100% | 40,553 psi | 65% | 2644 fps | 98.6% |
| Norma MRP | <<locked>> | 92% | 56,014 psi | 90% | 2864 fps | 100% |
| Norma URP | <<locked>> | 86% | 55,985 psi | 90% | 2762 fps | 100% |
| Ramshot Grand | <<locked>> | 94% | 54,723 psi | 88% | 2848 fps | 99.3% |
| Ramshot Hunter | <<locked>> | 86% | 54,868 psi | 88% | 2772 fps | 100% |
| Ramshot Magnum | <<locked>> | 96% | 52,953 psi | 85% | 2782 fps | 99.8% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 38,101 psi | 61% | 1759 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 84% | 53,853 psi | 86% | 2753 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 86% | 56,014 psi | 90% | 2831 fps | 100% |
| ReloadSwiss RS 76ᴾ | <<locked>> | 100% | 56,405 psi | 90% | 2946 fps | 100% |
| ReloadSwiss RS 80ᴾ | <<locked>> | 100% | 51,242 psi | 82% | 2835 fps | 97.8% |
| Rottweil R 904 | <<locked>> | 90% | 55,782 psi | 89% | 2756 fps | 99.1% |
| Rottweil R 905 | <<locked>> | 90% | 53,722 psi | 86% | 2766 fps | 99.6% |
| Rottweil R 907 | <<locked>> | 84% | 56,202 psi | 90% | 2726 fps | 99.9% |
| Shooters World Long Rifle | <<locked>> | 84% | 54,839 psi | 88% | 2697 fps | 100% |
| Shooters World SW4350 | <<locked>> | 84% | 53,026 psi | 85% | 2694 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 84% | 53,969 psi | 87% | 2654 fps | 100% |
| SNPE Vectan Tubal 8000 | <<locked>> | 90% | 53,301 psi | 85% | 2759 fps | 99.5% |
| Somchem S361 | <<locked>> | 88% | 53,809 psi | 86% | 2700 fps | 98.3% |
| Somchem S365 | <<locked>> | 86% | 52,866 psi | 85% | 2717 fps | 100% |
| Somchem S385 | <<locked>> | 90% | 54,389 psi | 87% | 2743 fps | 99.9% |
| Vihtavuori N150 | <<locked>> | 82% | 54,926 psi | 88% | 2644 fps | 100% |
| Vihtavuori N160 | <<locked>> | 84% | 54,244 psi | 87% | 2707 fps | 100% |
| Vihtavuori N165 | <<locked>> | 94% | 53,708 psi | 86% | 2720 fps | 99.7% |
| Vihtavuori N550 | <<locked>> | 84% | 53,301 psi | 85% | 2710 fps | 100% |
| Vihtavuori N555 | <<locked>> | 92% | 56,028 psi | 90% | 2789 fps | 100% |
| Vihtavuori N560 | <<locked>> | 92% | 55,825 psi | 90% | 2861 fps | 98.9% |
| Vihtavuori N565 | <<locked>> | 98% | 55,637 psi | 89% | 2841 fps | 99% |
| Vihtavuori N568ᴾ | <<locked>> | 100% | 52,301 psi | 84% | 2838 fps | 97.5% |
| Winchester 6.5 StaBALL | <<locked>> | 84% | 53,548 psi | 86% | 2667 fps | 100% |
| Winchester 760 | <<locked>> | 84% | 55,622 psi | 89% | 2782 fps | 100% |
| Winchester StaBALL HD | <<locked>> | 96% | 55,492 psi | 89% | 2894 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 92% | 54,027 psi | 87% | 2733 fps | 99.5% |
Recommended = one of the top powders for this cartridge and bullet combination.
Start Load - Barrel Length: 24"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 3100 | <<locked>> | 80% | 35,215 psi | 56% | 2385 fps | 98.1% |
| Accurate 4350 | <<locked>> | 80% | 47,108 psi | 76% | 2625 fps | 100% |
| Accurate MAGPRO | <<locked>> | 84% | 41,423 psi | 66% | 2602 fps | 95% |
| ADI AR 2209 | <<locked>> | 80% | 39,204 psi | 63% | 2507 fps | 96.8% |
| ADI AR 2213 | <<locked>> | 84% | 40,074 psi | 64% | 2552 fps | 95.7% |
| ADI AR 2217 | <<locked>> | 92% | 38,624 psi | 62% | 2520 fps | 95.4% |
| ADI AR 2225 | <<locked>> | 88% | 30,458 psi | 49% | 2365 fps | 95.1% |
| Alliant Reloder-16 | <<locked>> | 80% | 45,150 psi | 72% | 2628 fps | 100% |
| Alliant Reloder-17 | <<locked>> | 80% | 52,098 psi | 84% | 2740 fps | 100% |
| Alliant Reloder-19 | <<locked>> | 80% | 39,262 psi | 63% | 2500 fps | 96.8% |
| Alliant Reloder-22 | <<locked>> | 80% | 35,099 psi | 56% | 2444 fps | 95.5% |
| Alliant Reloder-23 | <<locked>> | 80% | 33,808 psi | 54% | 2411 fps | 99.9% |
| Alliant Reloder-25 | <<locked>> | 80% | 29,414 psi | 47% | 2326 fps | 96.6% |
| Alliant Reloder-26 | 59 gr | 80% | 37,028 psi | 59% | 2546 fps | 99.5% |
| Baschieri & Pellagri 109 | <<locked>> | 92% | 50,966 psi | 82% | 2700 fps | 95.6% |
| Bofors RP15 | <<locked>> | 82% | 35,012 psi | 56% | 2441 fps | 95.3% |
| Bofors RP30 | <<locked>> | 90% | 37,579 psi | 60% | 2536 fps | 95.6% |
| Bofors RP5 | <<locked>> | 80% | 35,099 psi | 56% | 2444 fps | 95.5% |
| Bofors RP7 | <<locked>> | 80% | 49,574 psi | 79% | 2625 fps | 99.5% |
| Hodgdon H1000 | <<locked>> | 88% | 36,898 psi | 59% | 2484 fps | 95.5% |
| Hodgdon H414 | <<locked>> | 80% | 48,805 psi | 78% | 2674 fps | 99.7% |
| Hodgdon H4350 | <<locked>> | 80% | 51,140 psi | 82% | 2684 fps | 99.4% |
| Hodgdon H4831 | <<locked>> | 82% | 40,030 psi | 64% | 2503 fps | 95% |
| Hodgdon H4831 SC | <<locked>> | 84% | 42,032 psi | 67% | 2543 fps | 95.6% |
| Hodgdon Hybrid 100V | <<locked>> | 80% | 42,540 psi | 68% | 2516 fps | 100% |
| Hodgdon Retumbo | 59.4 gr | 86% | 35,056 psi | 56% | 2523 fps | 96.1% |
| Hodgdon Superformance | <<locked>> | 80% | 48,341 psi | 78% | 2700 fps | 99.6% |
| Hodgdon TrailBoss | <<locked>> | 80% | 27,876 psi | 45% | 1532 fps | 100% |
| IMR 4350 | <<locked>> | 80% | 44,976 psi | 72% | 2562 fps | 99% |
| IMR 4451 Enduron | <<locked>> | 80% | 50,995 psi | 82% | 2648 fps | 99.8% |
| IMR 4831 | <<locked>> | 80% | 44,875 psi | 72% | 2572 fps | 100% |
| IMR 4955 Enduron | <<locked>> | 82% | 41,669 psi | 67% | 2503 fps | 95.7% |
| IMR 7828 SSC | <<locked>> | 84% | 38,522 psi | 62% | 2530 fps | 95.2% |
| IMR 8133 Enduron | <<locked>> | 98% | 37,884 psi | 61% | 2562 fps | 95.5% |
| Lovex S065 | <<locked>> | 80% | 48,486 psi | 78% | 2598 fps | 100% |
| Lovex S070 | <<locked>> | 80% | 46,818 psi | 75% | 2592 fps | 99.6% |
| Lovex S071 | <<locked>> | 80% | 30,385 psi | 49% | 2270 fps | 96.4% |
| Norma 204 | <<locked>> | 80% | 45,063 psi | 72% | 2598 fps | 98.1% |
| Norma 217 | <<locked>> | 94% | 33,344 psi | 53% | 2474 fps | 96.1% |
| Norma MRP | <<locked>> | 80% | 36,709 psi | 59% | 2510 fps | 97.5% |
| Norma URP | <<locked>> | 80% | 46,093 psi | 74% | 2612 fps | 100% |
| Ramshot Grand | <<locked>> | 84% | 38,247 psi | 61% | 2539 fps | 95.6% |
| Ramshot Hunter | <<locked>> | 80% | 44,918 psi | 72% | 2608 fps | 99.7% |
| Ramshot Magnum | <<locked>> | 84% | 34,127 psi | 55% | 2425 fps | 96% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 28,616 psi | 46% | 1572 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 80% | 47,152 psi | 76% | 2648 fps | 100% |
| ReloadSwiss RS 70 | <<locked>> | 80% | 45,179 psi | 72% | 2661 fps | 100% |
| ReloadSwiss RS 76 | <<locked>> | 84% | 31,850 psi | 51% | 2438 fps | 95.8% |
| ReloadSwiss RS 80 | <<locked>> | 96% | 44,019 psi | 71% | 2703 fps | 96% |
| Rottweil R 904 | <<locked>> | 80% | 40,727 psi | 65% | 2490 fps | 96.1% |
| Rottweil R 905 | <<locked>> | 80% | 38,624 psi | 62% | 2490 fps | 96.8% |
| Rottweil R 907 | <<locked>> | 80% | 49,574 psi | 79% | 2625 fps | 99.5% |
| Shooters World Long Rifle | <<locked>> | 80% | 48,486 psi | 78% | 2598 fps | 100% |
| Shooters World SW4350 | <<locked>> | 80% | 46,818 psi | 75% | 2592 fps | 99.6% |
| SNPE Vectan Tubal 7000 | <<locked>> | 80% | 47,384 psi | 76% | 2549 fps | 99.6% |
| SNPE Vectan Tubal 8000 | <<locked>> | 80% | 38,319 psi | 61% | 2484 fps | 96.7% |
| Somchem S361 | <<locked>> | 80% | 41,234 psi | 66% | 2477 fps | 95.4% |
| Somchem S365 | <<locked>> | 80% | 43,178 psi | 69% | 2569 fps | 100% |
| Somchem S385 | <<locked>> | 80% | 39,189 psi | 63% | 2474 fps | 97.7% |
| Vihtavuori N150 | <<locked>> | 80% | 51,445 psi | 82% | 2595 fps | 100% |
| Vihtavuori N160 | <<locked>> | 80% | 47,529 psi | 76% | 2605 fps | 100% |
| Vihtavuori N165 | <<locked>> | 80% | 33,953 psi | 54% | 2352 fps | 95.7% |
| Vihtavuori N550 | <<locked>> | 80% | 46,876 psi | 75% | 2608 fps | 100% |
| Vihtavuori N555 | <<locked>> | 80% | 38,130 psi | 61% | 2487 fps | 99.9% |
| Vihtavuori N560 | <<locked>> | 82% | 39,494 psi | 63% | 2559 fps | 95% |
| Vihtavuori N565 | <<locked>> | 88% | 39,827 psi | 64% | 2556 fps | 95.4% |
| Vihtavuori N568 | <<locked>> | 96% | 45,368 psi | 73% | 2713 fps | 95.8% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 46,586 psi | 75% | 2566 fps | 100% |
| Winchester 760 | <<locked>> | 80% | 48,805 psi | 78% | 2674 fps | 99.7% |
| Winchester StaBALL HD | 56.7 gr | 80% | 30,081 psi | 48% | 2434 fps | 100% |
| Winchester Supreme 780 | <<locked>> | 80% | 35,824 psi | 57% | 2402 fps | 95.7% |
Recommended = one of the top powders for this cartridge and bullet combination.
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 76 powders for 7 mm Rem. Mag. loaded with the .285 | 173gr | Prvi Partizan SP. Hodgdon Retumbo delivers the highest muzzle velocity at 2,946 fps; across all powders the maximum-charge window runs from 1,716 fps to 2,946 fps. ADI AR 2217 gives the best case fill at 100 %, and 76 of the 76 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (430 MPa), the top charges use 60–90 %, leaving at least 10 % headroom. The 173.0 gr projectile in 0.285" calls for a 1:12.5 twist; slower twists will usually not stabilise this weight. ADI AR 2217, ADI AR 2218, ADI AR 2225 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Reloder-26, Winchester StaBALL HD, Hodgdon Retumbo rank at the top here: for 7 mm Rem. Mag. with the .285 | 173gr | Prvi Partizan SP they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2218, Alliant Reloder-33, IMR 7977 Enduron burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.